RC and slot car diamond tools for Comm-Lathes. Do you want your Comm-Lathe to produce the best results with clean slots and a better finish? Your motor will run smoother and longer with less voltage drain when you replace your original lathe tool with the “Carter-Comm” diamond tool designed specifically for your lathe. Whether you’re a race enthusiast or motor manufacturer, Carter-Comm tools produce the required micro finishes needed for building and rebuilding all types of motor commutators. Produce clean-cut commutators with no “drag-over” in the slots Last longer and take more shock and abuse than natural diamond tools Are excellent for motor refurbishing and trackside repair Cost less than natural diamonds